diff --git a/lib/ace/ace.js b/lib/ace/ace.js
index b0fc073d..f0e7f50b 100644
--- a/lib/ace/ace.js
+++ b/lib/ace/ace.js
@@ -54,6 +54,7 @@ var MultiSelect = require("./multi_select").MultiSelect;
 require("./worker/worker_client");
 require("./keyboard/hash_handler");
 require("./placeholder");
+require("./mode/folding/fold_mode");
 exports.config = require("./config");
     /**
      * Ace.edit(el) -> Editor